Crane attachment for handling well-drilling bits and the like



Dec. 11,1923. 1,477,095

' B. F. ZElGLER CRANE ATTACHMENT FOR HANDLING WELL DRILLING BITS AND THE LIKE Filed Sent. 6, 1922. 2 Sheets-Sheet 1 Wzrwsss p INVENTOR.

ffiymwrff v 6 7 ATTORNEY Dec. 11 1923. 1,477,095 7 B. F. ZEIGLER CRANE ATTACHMENT FOR HANDLING WELL DRILLING BITS AND THE LIKE Filed Sept. 1922 2 Sheets-Sheet 2 INVENTOR Patented Dec. 11, 1923.

warren star-as tine BENJIMAN n'zEIeL'er-i, or rear won'rri, Texas.

' CRANE ATTACHMENT roannivntme WELL- enance Bites aim Tan LIKE.

Application filed. September 6, 1922. Serial No. 58 6,4 16.

T0 (ZZZ whom it may concern: Be it known that I, BENJIMA-N F. ZEIG- LEE, a citizen of the United States, residing at Fort lWorth, in the county of-Tarrant and State of Texas, have invented new and useful Improvements in Crane Attachments for Handling. Well-Drilling Bits and the like, of which the following is a specification.

for handling well-drilling bits. The principal object of this invention is to provide a bit-handling tool which can be attached to. a crane and has novel means for adjusting the space between the slips, for opening the frame, and for adjusting one. of the slips with respect to the other. Other objects will appear hereinafter.-

Referring to the accompanying drawings,-

Fig. 1 is a plan view. of-my invention; Fig.

2, aside elevation thereof; and Fig. 3, a

central longitudinal section of 1 on the line III-III. Fig.14 is'a plan viewof a modification of Fig. 1; Fig. 5, a side view of Fig. 4; Fig. 6, a view showing my attachment supportinga drill-bit in position for handling it in a tempering bath; and

Fig. 7, a view ofmy attachment supporting a bit in position fordressing'itp On the drawings, 1 and 2 designate the end members of a frame, having one side thereof composed of the two members 3 and 4 preferably integral with their respective end members 1 and 2. The members 3 and 4 have overlapping ends which have regularly spaced longitudinally-arranged openings 5 through which bolts 6 may be passed so that the members 3 and 4 may act as a rigid frame-side, and so that theends 1" and 2 may be adjusted atdifierent distances from each other, their distance apartdepending upon what pairs of openings in the members 3 and 4 are placed in registry.

The remaining side of the frame is com-- posed of the members 7 and 8 connected to the members 1 and 2 by the bolts or lag screws 9 and 10. The members 7 and 8 have openings 11 spaced and arranged so as to be directly opposite the openings 5, and they are connected together by the bolts 12 which pass through registered openings 11 in the members 7 and 8 to make the latter substantially rigid in any selected adjustment. The bolt 9 serves as a pivot for the side member 7, and the bolt 10 receives the downwardiy open slot 13 in the lower edge of My invention relates to crane attachments the member 8, the width of the slot being v substantially the diameter ofthe; shank of the bolt 10, and't'he portions of the member 8 about the slot being between the end 2 and the head of'the bolt 10, and theupper end of the slot acting as a rest and stop for the member 8.

The external surfaces of the frameends 1 and'2 have at their centers the threaded horizontal swivel studs 14 and 15-p'rov'ided with the respective swivel rings 16and 17 held between. their adjacent frame endsby the nuts 18 and 19. The swivel rings are'provided with chains 20 which are connected to the block 21 adapted to be suspended at its center to a crane by a chain 22 or other suitable device. I

The end 2 of the frameis providedon theface opposing the end 1 with a vertical undercutslot' 23 having its outer wall .24

inclined downwardly and inwardly, the slot f being open toward the end 1 of the frame;

A wedge-shaped slip :25with a rear sideinclineol tocorrespond to the angle of the wall 24 is slidable up and down in theslot 23 and has teeth 26 facing the center of the frame.

The end 1' of theframe has the ve'rmi slot 27 facing they end 2. A slip-block 28 is adjusted horizontally in the slot by the screw 29 extending through the stud 1e and the end 1, and swiveled in the back face face opposite the end 2 of the frame,'the

33 is slidable in the slot 31 and has its rear face inclined to correspond to the angle of the wall 32. The slot is open opposite the slip 25 and the slip 33 projects through of the block where it is retained by the plate 30 secured to the block by screws. Theblock 28 has the undercut vertical slot 31 on the the slot and is provided with teeth 34 facing the teeth 26 on the slip 25. The outer end of the screw 29 has an eye 35.

An eye-bolt 36 is screwed axially into the stud 15.

The frame is suspended from a craneby the block 21, the bolts 6 and 12 having been placed in such holes 5 and 11 as will locate the slips 25. and 33 the right distance apart 1 to grip a drill-stem or other object between them. If the bolts do not provide the proper adjustment, the screw 29 is turned to move the slip 33 to a proper gripping position.

The side members 7 and 8 may be swung up on the bolt 9 so as to leave the side of the frame open to facilitate the placing of a drill-stem or the like between the slips or the removin of the same from the frame. The swivel rings 16 and 17 allow the frame to rock sidewise. A handle 37 on the member 8 is convenient for operating the side members 7 and 8.

Referring now to Figs. 4 to 7, parts therein which are identical with parts in Figs. 1 to 3 have the same reference numerals, and parts which are-similar to parts in Figs. 1 to 3, but differ somewhat therefrom, have the same reference numerals with the letter a added.

The sides of the end members 1 and 2 are provided with recesses 39 to receive the ends of the side members 3*, P, 7 and 8 the said ends being provided with pivot pins or bolts which pass through them and a pair of alined holes 42 in the walls 41 of the end members 1 and 2. The holes 42 are arranged in rows both parallel with the sidemembers and at an angle therewith, so that the pivot bolts 40 may be arranged so as to bring the sides 3 l and 7 -S closer together or farther apart, and so that. the end members 1 and 2 may be adjusted with respect to each other beyond the amounts which the holes 5 and 11 and the bolts 6 and 12 could effect.

Fig. 6 shows how a drill-bit may be carried in a vertical position by my attachment while it is suspended, from a crane by the chains 20. vThe edges of the bit are seized by the slips 25 and 33 and the sides of the bit are between the sides of the frame, which as shown in Fig. 7 may engage the four faces of the bit.

In Fig. 7 I show the bit in a horizontal position as is required for dressing the bit. The frame is suspended from a crane by the chain or cable 20 connected to the eye 38. The cable could be connected to the eye 43 instead of the eye 35. In the position shown in Fig. 7 certain parts of the bit may be dressed. By suspending the frame by the eye 35 or 36, other parts of the bit may be dressed.

I claim--- i I 1. In a crane attachment, a horizontal frame, slips carried by the ends of the frame,

means for adjustingthe sides of the frame to adjust the distance between the ends of the frame, and means for adjusting one of the slips in its end member toward and away from the other slip.

2. In a crane attachment, a horizontal frame having end members and side members, a slip supported by one end memb'er, a block carried by the other end member, a

slip carried by the block opposite the other I slip, means for adjusting they block directlytoward and away from the first slip and necting either the side or the end. members supports l frame having": side and end members, slips supported by the end members, means for pivotally con-' at will to the crane, and means for adjusting the length of the side members.

5. Ina crane attachment, a frame having 7 trunnions at opposite portions thereof, slips carried by the said portions thereof, suspension rings for the trunnions wherein the trunnions rotate, and suspension devices for the rings. I i

6. In a crane frame having end members with. outwardly extending studs, swivel-rings on the studs,

suspension means attached to the swivelrings, and means for holding the swivel? rings on the studs.

7. In a crane attachment, aframe, means attachment, a horizontal I 1 carried thereby .for gripping the drill-bit and means whereby the frame may be-sup-= ported so as to hold the bit horizontally for 1 dressing it and for'holding tempering it.

it vertically for In testimony whereofpI affix my signature this 25th day of July, 1922.

BENJIMAN'F. ZEIGLER. 

